remove duplicate BytesBuiltins initialization

Author: qunaibit

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/Python3Core.java

@@ -274,7 +274,6 @@ private static final PythonBuiltins[] initializeBuiltins() {
                         new BytesBuiltins(),
                         new ComplexBuiltins(),
                         new ByteArrayBuiltins(),
-                        new BytesBuiltins(),
                         new TypeBuiltins(),
                         new IntBuiltins(),
                         new ForeignObjectBuiltins(),